UA55C6900 : No MAC address , No USB

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gf7800
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UA55C6900 : No MAC address , No USB

Post by gf7800 »

USB ports and LAN port stopped working on my UA55C6900 LED TV . when i attempt a network test in main menu i got this message :
"The MAC address is not valid .Contact a local Samsung customer service"
The MAC address shows a long line of zeros !
And when connecting any storage via USB1 or USB2 i got this message :
"No external storage device found. Check the connection status"
though the connected hdd light will light on. all other TV functions works normally .
PS : the standby led will not light up when TV is off and connected to the AC since this issue happened
Factory default did not helped .
Is there a way to fix this without shipping this huge TV to Samsung local service ?
Thanks in advance.

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juusso
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Re: UA55C6900 : No MAC address , No USB

Post by juusso »

You haven`t said what did you do before tv started to behave weird.
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gf7800
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Re: UA55C6900 : No MAC address , No USB

Post by gf7800 »

Oh sorry forgot to mention ,TV was connected to xDSL modem which stopped working after a winter thunderstorm .
maybe surge through lan port ?

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juusso
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Re: UA55C6900 : No MAC address , No USB

Post by juusso »

seem your mainboard is damaged. If TV is under warranty, call service, if not, search for spare mainboard replacement.
LE40B653T5W,UE40D6750,UE65Q8C
Have questions? Read SamyGO Wiki, Search on forum first!
FFB (v0.8), FFB for CI+ . Get root on: C series, D series, E series, F series, H series. rooting K series, exeDSP/exeTV patches[C/D/E/F/H]

DO NOT EVER INSTALL FIRMWARE UPGRADE

gf7800
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Joined: Thu Jan 08, 2015 1:31 am

Re: UA55C6900 : No MAC address , No USB

Post by gf7800 »

Thanks for replying. unfortunately TV is out of warranty.
So the mainboard itself Couldn't be fixed ?

gf7800
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Re: UA55C6900 : No MAC address , No USB

Post by gf7800 »

How to get the part number of the mainboard ?
This is the TV official website page :
http://www.samsung.com/ae/support/model/UA55C6900VRXTW
Thanks.

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beatfreak
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Re: UA55C6900 : No MAC address , No USB

Post by beatfreak »

LAN Port directly at xDSL Modem? this is somwhere at the border between brave and dumb :D do this with a win xp sp0 machine and i will be raped by the internet in a few seconds... XD

To get the part number of your tv you could simply search for mainboards compatible with ua55c6900 or you open your tv and have a look at your MB...
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gf7800
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Joined: Thu Jan 08, 2015 1:31 am

Re: UA55C6900 : No MAC address , No USB

Post by gf7800 »

@beatfreak . Internet won't damage a smart TV , does it?
The wired connection between xDSL modem and the TV was my fault ,hence the problem occurred. The connected modem were damaged by a lightning strike .TV's Lan interface have been broken all the way.... But I'm wondering why USB ports were the other victim :) (The HDMIs are all Okay ) ,that makes me think that it can be fixed.

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beatfreak
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Re: UA55C6900 : No MAC address , No USB

Post by beatfreak »

don't think of it as a tv, its a computer with arm-cpu and linux-os and well, a dvb tuner onboard
if it is due to a lightning damage then it would be enough if the usb controller chip is closer to the lan controller than the hdmi related chips to have it damaged also
//UE40C6500 @ T-VALDEUC 3011 // rooted manual HotelMode style // PVR to NFS via 18MB on-the-fly sparse XFS //
FYI: you can close your ssh session with SamyGO with

Code: Select all

~.
If you can't fix it using dvct tape, you are not using enough dvct tape.

gf7800
Posts: 7
Joined: Thu Jan 08, 2015 1:31 am

Re: UA55C6900 : No MAC address , No USB

Post by gf7800 »

Sorry if this sounds ridiculous. But is this particular damaged USB controller chip can be replaced ?

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